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    Matched set BG 850 Holley Blower carbs
    #1
    Airpacker
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    10-23-2009 05:53 PM
    Boost referenced Holley 850's by Barry Grant.
    Come with both original and chrome float bowls.
    I got them as part of a package with a blower and have no use for them.
    No idea what jets or PV's are in them. Never took them out of the boxes they arrived in.
    They appear to be in good condition but I do not know their history.

    $ 400 the pair plus shipping.

    PM any questions.
    Attached Thumbnails Attached Thumbnails DSC00762.jpg   DSC00763.jpg  
    Last edited by Airpacker; 10-24-2009 at 10:06 AM.
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    #2
    Underdog88
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    10-27-2009 09:42 PM
    What's involved in setting them up for normally aspirated twins?
    Thanks,
    Mark
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    #3
    DAREDEVIL
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    10-27-2009 09:49 PM
    Quote Originally Posted by Underdog88 View Post
    What's involved in setting them up for normally aspirated twins?
    Thanks,
    Mark
    nothing !!!!

    ...maybe jetting for your engines !!!
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    #4
    Boss252
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    10-28-2009 10:22 AM
    Interested. What are the part numbers?
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    #5
    Rookie
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    10-28-2009 10:57 AM
    Also would like to know the #'s on the side of the carbs. I have some Holley 750's by Barry Grant that I need to sell before I purchase 850's.

    Thanks
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    #6
    Boss252
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    10-28-2009 11:15 AM
    Quote Originally Posted by Rookie View Post
    Also would like to know the #'s on the side of the carbs. I have some Holley 750's by Barry Grant that I need to sell before I purchase 850's.

    Thanks

    May be interested in your 750's. might be a better fit for me. send me some details
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    #7
    Airpacker
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    10-28-2009 11:21 AM
    Thet are 4781's with the choke horns milled off. At least that is the number engraved into the main carb body.

    http://www.holley.com/0-4781S.asp
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    #8
    Boss252
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    10-28-2009 11:31 AM
    Do you know the Barry Grant part number?
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    #9
    Airpacker
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    10-28-2009 11:55 AM
    there is a 2723A and a 2723B stamped into the airhorn on each carb?

    other than that, I have no idea what a BG part number would look loike or where to look for it.
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    #10
    Rookie
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    10-28-2009 01:05 PM
    Quote Originally Posted by Boss252 View Post
    Do you know the Barry Grant part number?
    I don't belive you can find a BG part # for them anymore without calling BG. You have to use the Holley numbers engraved on the side. Mine have BG CNC'd on them. My 750's are on my 590HP 454's

    Airpacker I will get back to you after I work out some details with Boss252
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    #11
    Airpacker
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    03-10-2010 09:49 AM
    spring bump
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    #12
    Airpacker
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    03-28-2010 09:31 AM
    sold!
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    #13
    MetalBrosRacing
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    03-28-2010 04:03 PM
    Price for your 750's? Do they have the down vent tubes?
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